1. Nature's recycling system can work well only if people work with the system and not against it.
    只要人们顺着这个系统，而不是对它造成破坏，大自然的水循环系统就能很好运转。

2. Nature has a perfect system for recycling water.
    大自然拥有一套循环使用水的完美系统。

3. He has suffered from a disorder of the digestive system.
    他已患消化系统失调。

4. He put forth some proposals to reform the educational system.
    他提出了一些改革教育制度的建议。

5. Here a haphazard method of teaching; there the whole task laid out in a system.
    一边采用的是无计划无系统的教学方法；另一边则是有系统地施教。

6. However, people cause problems for this natural recycling system.
    但是，人类却给这种大自然的水循环系统制造了许多麻烦。

7. All this fully demonstrates the incomparable superiority of the socialist system.
    这一切充分显示了社会主义制度的无比优越。

8. As the sewer system collapses, people will dump sewage on the streets where rain will eventually wash it away.
    由于下水道坍毁，人们将污水倒在街上，最后被雨水冲走。

9. All air in Billion City would be passed through a cleaning system to remove dust particles, pollen, noxious gases and other pollutants.
    十亿人口城市中所有的空气都通过净化系统来消除灰尘、花粉、有害气体及其它污染物。

10. Also, when we at Nomura converted to computers about five years ago, the new system eliminated the jobs of 700 people.
    同样，当我们野村证券公司五年前改用电脑时，新系统使700名员工失去了原来的工作。